Operation Manual

IP
SIP Software Release 6-0-0
J613-M0524-00
27
This is rather a waste of bandwidth, and the purpose of multicasting is to
make efficient use of bandwidth.
The solution to this problem is to make the layer-2 switches aware of the
IGMP packets that are being passed around. That is, although the IGMP
packets are destined for the router, the layer-2 switches need to ‘snoop’ them
as they go past. Then the layer-2 switches can be aware which hosts have
asked to join which multicast groups, and so will only forward the multicast
data to the places where it really needs to go.
Configuration Examples
Configuring the IP address
To configure an IP interface for the Ethernet LAN connection:
SET IP INTERFACE=ETH0 IPADDRESS=192.168.10.5
MASK=255.255.255.0 GATEWAY=192.168.10.1
To see the IP interface configuration:
SHOW IP INTERFACE
This command shows the major information relevant to IP interface
configuration. To request a specific parameter, its name must be included in
the command.
DHCP Client
An IP interface can be configured either with a static IP address, or with a
dynamic IP address assigned by DHCP (Dynamic Host Configuration
Protocol).
To configure an IP interface to use an address assigned by DHCP, set the
CONFIGURATION parameter of the interface to DHCP.
When the CONFIGURATION parameter of an IP interface is set to DHCP
rather than to a static IP address, the AT-RG213’s DHCP client will obtain
the IP address and subnet mask for the interface, and other IP configuration
parameters, from a DHCP server.
Example
To configure the interface eth0 in order to automatically obtain its IP address
and subnet mask from DHCP, use the command:
SET IP INTERFACE=eth0 CONFIGURATION=DHCP